Application ofSmine intrinsically safeSexplosion-proofShomemade compensation arc suppressionSdevice,StheS10kV resonanceSgrounding system in coal mine power networkSsingle-phase grounding faultSeffect during the study,Scombined withStheSstudy ofScapacitiveSarc suppression coilSand relatedSminingSautomation equipment,SprovenSby simulation,Sanalysis ofSautomaticSarc-suppressionSdeviceSin theSfireSarc tuningSfunction.SSoftware and hardwareSdeviceSwas designed,Sthe experimental results show that,StheS59.016ASgroundingScurrent in 10kVScoal mine power networkSsingle-phase grounding,Sthe compensation currentSandStestedSafterScompensation equipmentSto produce 62.885A,StheSfault residualSflowSis reduced to 3.869A,Sin the power gridSsafety rangeSis successfullySarcSfunctionSand make itSno longer.